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	1.		Environmental pollution: Causes, effects & control by Sethi, M S Sethi, Inderjeet Material type: Text; Format: print ; Literary form: Not fiction Publication details: New Delhi: Commonwealth Publishers, 1991 Availability: Items available for loan: National Science Library (1)Call number: 502.55 N1. Place hold Add to cart (remove)
	2.		Global air pollution: Problems for the future by Sethi, M S Material type: Text; Format: print ; Literary form: Not fiction Publication details: New Delhi: Commonwealth Publishers, 1992 Availability: Items available for loan: National Science Library (1)Call number: 502.55 N2. Place hold Add to cart (remove)

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